Control Module Communication Bus OFF - Vehicle Stability Control System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: U0073/94: Control Module Communication Bus OFF

DTC U0073/94 - Control Module Communication Bus OFF

DTC U0100/65 - Lost Communication with ECM / PCM

DTC U0121/94 - CAN Communication Function Fault

DTC U0123/62 - Lost Communication with Yaw Rate Sensor Module

DTC U0124/95 - Lost Communication with Lateral Acceleration Sensor Module

DTC U0126/63 - Lost Communication with Steering Angle Sensor Module

INSPECTION PROCEDURE

Refer to CAN communication system How to Proceed With Troubleshooting.

NOTICE:
- DTCs for the CAN communication system as follows:
U0073/94, U0123/62, U0124/95, U0126/63, U0100/65.
- Refer to troubleshooting of each system if DTCs regarding the CAN communication system are not output.

1. CHECK AND CLEAR DTCs
NEXT -- Continue to next step.

2. CHECK CAN BUS LINE
NEXT -- Continue to next step.

3. CHECK USING TECHSTREAM
(a) Select the "CAN Bus Check" Initial Inspection and Diagnostic Overview.
Result:





B -- COMMUNICATION STOP MODE TABLE
C -- CHECK FOR AN OPEN IN ONE SIDE OF THE CAN SUB BUS LINE
A -- Continue to next step.

4. CHECK DTC COMBINATION TABLE
(a) Confirm trouble according to the combination of output DTCs regarding the CAN communication system.

HINT: Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the Techstream "CAN Bus Check" screen.

NEXT -- Continue to next step.

5. CIRCUIT INSPECTION
NEXT -- Continue to next step.

6. IDENTIFICATION OF PROBLEM
NEXT -- Continue to next step.

7. REPAIR OR REPLACE
NEXT -- Continue to next step.

8. CONFIRMATION TEST
NEXT -- END